Mikel Arteta admits is was a "difficult decision" to sell Joe Willock in the summer but ultimately he needed to play more regularly.
The England Under-21 international will return to Emirates Stadium on Saturday with Newcastle, and our manager expects him to get a big reception.
"I think it will be really nice to have him [back], we all love and like Joe," Arteta said.
"Obviously it was a difficult decision to make to let him go, but I think he’s shown that’s what he needs as well to play the minutes that he’s finding there and find a new challenge.